Arterio-venous malformations – classification, imaging and endovascular treatment
Arterio-venous malformations of the brain (brain AVMs) correspond to congenital cerebrovascular anomalies. They are cause of death and long-term morbidity mostly due to intracranial hemorrhage and epilepsy; however, they may remain silent over a long period of time, even over anentire life. The most frequent clinical presentations of brain AVMs are hemorrhage, seizure, chronic headache, and focal deficits not related to hemorrhage. Several systems have been designed to classify patients with brain AVMsregarding surgical risk (Spetzler et al., 1992) and individual hemorrhagic risk (Nataf et al., 1998). Embolization of arteriovenous malformations of the brain is a promising method for treatment. Variety of techniques, embolic agents, and even basic treatment concepts from one team to another and thenfrom one publication to another.
Key words: ARTERIO-VENOUS MALFORMATIONS. CLASSIFICATION. DIAGNOSTIC IMAGING. ENDOVASCULAR TREATMENT